Srhythm NC35 Noise Cancelling Wireless Headphones Bluetooth 5.0, Foldable Over Ear Headset with Build-in Mic,50+ Hrs Playtime,Multi-Point Bluetooth Connection Voice Call

If any issues, here are tips for you:
1. Full charge your headphones(don’t use fast charger)
2. Reset headphones by inserting audio cable into headphone audio socket then removing it.
3. Long pressing both volume down and volume up buttons more than 5 seconds to delete pairing.

World-Leading Digital Active Noise Cancelling (ANC): Advanced noise cancellation technology effectively quells 90% of stable low frequency background noise when in noisy environment airplane/subway/car/office/factory/crowd etc.(not 100% sound canceling).ANC ON,World OFF.ANC works well in both wired and wireless mode
Elegant Appearance & Tiny Lightweight Folding: 194g/0.42 lb ONLY ! Light for head relaxing and portable for traveling storage,Multi-point rotation ear-pads with adjustable headband. Ergonomic international standard size
Fast Charge & 50+Hours Enjoyment: Charging 10 minutes to use 3 hours.High efficiency and energy-saving Bluetooth 5.3 to prolong playtime up to 50 hours after 1-2 hours’ full charge.Built-in sensitive microphones for easy communication under Bluetooth mode.Support Siri voice control.3.5mm stereo audio cable as back-up when in low battery.Extra Charging protection
Ultimate Sound: Clear mega bass from unique designed sound chamber and 40mm HD premium speakers.Professionally stereo drivers’ and other frequency bands’ improvements make music grace to find the rhythm of your soul.Sometimes quality just needs to be heard
Superior Comfort: Extremely comfortable memory protein leather with skin-friendly breathable feel.Exclusive Designs of Air Pressure Balance to reduce sound wave pressure of active noise reduction. Designed in Japan